Fonseranes Locks

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Fonseranes Locks (French: écluses de Fonseranes, les neuf écluses) are a flight of staircase locks on the Canal du Midi near Béziers. They consist of eight oval-shaped lock chambers, characteristic of the Canal du Midi, and nine gates, which allow boats to be raised a height of 21.5 metres (71 ft) over a distance of 300 metres (980 ft). The flight was originally built as an eight-rise, which together with the ninth lock (the écluse de Notre-Dame, 710 metres (0.44 mi) to the northeast) allowed boats to cross the Orb river on a level and re-enter the canal further downstream. The "nine locks" name dates from this time. However, in 1858 an aqueduct was built to replace the crossing of the Orb. Boats now enter and leave the lower end of the flight through the side of chamber seven, which is permanently kept at its upper water level. The flight is therefore effectively made up of six locks. The lower gates of the seventh chamber are now permanently closed; the eighth chamber and the ninth lock, the pre-1858 route descending to the Orb, are disused. This side exit from chamber seven causes some confusion in describing the flight of locks. While most sources now ignore the disused eighth chamber, some still describe the flight as a seven-rise, despite chamber seven being permanently at the lower canal level. In 1983 the Fonseranes inclined plane was built adjacent to the locks, to allow commercial traffic and boats too large for the locks to bypass them. Unfortunately the project encountered technical problems, and after many years of attempting to solve them the inclined plane was abandoned in 2001. Traditional buildings such as the stables and the lock keeper's house still remain. These and the locks themselves have made the site the third most...